You don't show the Polygon class, but from the error it looks like you haven't
provided a zero-argument constructor. It must have one, even if it's private
and you never call it. GWT-RPC needs it for anything that it serializes.
Paul
On 21/09/12 15:40, coffeMan wrote:
> I created a class that implements IsSerializable. I am using Polygon and
> LatLng within this class called BoundingBox. I am getting issues with no
> being able to instantiate Polygon without a constructor. Do you create a
> separate Polygon class?
>
> [ERROR] com.google.gwt.maps.client.overlay.Polygon has no available
> instantiable subtypes.
>
> &
> [ERROR] subtype com.google.gwt.maps.client.overlay.Polygon is not default
> instantiable (it must have a zero-argument constructor or no constructors at
> all) and has no custom serializer.
>
> Can anyone point me in the right direction???
>
> Thanks!
>
> public class BoundingBox implements IsSerializable {
>
> private LatLng Coordinate_One;
> private LatLng Coordinate_Two;
> private LatLng Coordinate_Three;
> private LatLng Coordinate_Four;
> private Polygon poly;
>
> public BoundingBox() {
> }
>
> public Polygon getPoly() {
> return poly;
> }
>
> public void setPoly(Polygon poly) {
> this.poly = poly;
> }
>
> public Polygon CreatePolygon(BoundingBox bbox) // param = file type object
> {
> LatLng[] polyOverlay = new LatLng[5];
> polyOverlay[0] = LatLng.newInstance(bbox.getCoordinate_One()
> .getLatitude(), bbox.getCoordinate_One().getLongitude());
> polyOverlay[1] = LatLng.newInstance(bbox.getCoordinate_Two()
> .getLatitude(), bbox.getCoordinate_Two().getLongitude());
> polyOverlay[2] = LatLng.newInstance(bbox.getCoordinate_Three()
> .getLatitude(), bbox.getCoordinate_Three().getLongitude());
> polyOverlay[3] = LatLng.newInstance(bbox.getCoordinate_Four()
> .getLatitude(), bbox.getCoordinate_Four().getLongitude());
> polyOverlay[4] = LatLng.newInstance(bbox.getCoordinate_One()
> .getLatitude(), bbox.getCoordinate_One().getLongitude());
>
> this.poly = new Polygon(polyOverlay);
>
> return poly;
> }
> public LatLng getCoordinate_One() {
> return Coordinate_One;
> }
>
> public void setCoordinate_One(LatLng coordinate_One) {
> Coordinate_One = coordinate_One;
> }...etc for the rest of the sets/gets
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